Contains 5/16", 5/8", 3/4" cold chisels; 1/16", 1/8", 5/32", 3/16", 1/4", 5/16" pin punch; 1/4" center punch; 3/8" prick punch and 7" scratch awl; scratch awl is ideal for starting screw holes; cold chisels are used for cutting and shaping metal that is softer than the cutting edge; pin punches are used to remove a pin or key; center punches are used for making accurate hole starting easier and prick punches are used to mark and scribe work pieces. Made of high carbon heat treated American steel.